Middlings-purifier



(No Model.)

W. M. SHOOK.

MIDDLINGS PURIFIBR.

No. 346,326. Patented July 27, 1886.

UNITED STATES PATENT OFFICE.

XVILLTAM M. SHOOK, OF CANTON, OHIO.

MlDDLlNGS-PURIFIER.

SPECIFICATION forming part of Letters Patent No. 346,326, dated July27,1886.

Application filed November 28,1885. Serial No. 181,170. (X0 model.)

To all whom it may concern.-

Be it known that I, WILLIAM M. SrrooK, a citizen of the United States,and a resident of Canton, in the county of Stark and State of Ohio, haveinvented certain new and useful Improvements in Middlings-Purifiers; andI do hereby declare that the following is a full, clear, and exactdescription of the invention, which will enable others skilled in theart to which it appertaius to make and use the same, reference being hadto the accompanying drawings, which form a part of this specification,and in which- Figure 1 is a side elevation, partly in section, of myimproved middlingspurifier, with the exterior casing partly broken awayto show the interior construction and arrangement. Fig. 2 is an endelevation of the same, partly in section. Fig. 3 is a cross-sectionalview of the flour bolt or reel, and Fig. 4 is a perspective view of ablock securedto the middle partition.

Similar letters of reference indicate corresponding parts in all thefigures.

My invention has relation to middlingspurifiers; and it consists in theconstruction and combination of parts of a machine of that class, whichwill be hereinafter more fully described and claimed.

In the accompanying drawings, A denotes the chest or easing, inside ofwhich the boltB is placed, in the usual manner, in a slightlyinclinedposition. This chest is divided by a vertical partition, 0, from achamber or compartment, D, the lower part of which forms an aspirator,E, of any approved construction, which operates in conjunction with asuctionfan, F, arranged on top of the casing or compartment D. Below theaspirators (of which, of course, there is one for each bolt, two beingshown in the accompanying illustration) are arranged the usualconveyers, G. The bolt B is reduced in diameter at one end, as shown atB, and this reduced end projects through a circular aperture, I, in thepartition 0. The central shaft of the bolt (shown at H) extends throughthe entire length of the bolt from one end to the other, and isjonrnaled in suitable bearings at opposite ends of the machine, in theusual manner.

In order to prevent the suction from the aspirators contained in thechamber D from affecting the contents of the flour-chest A, awedge-shaped block, K, of wood or any other suitable material, isarranged around the circular aperture 1 in said partition, so as to fillthe inclined space between the enlarged end of the bolt and thepartition. In this manner the aperture 1- is made practically air-tight,and no flour can be drawn from the chest A into the compartment D, inwhich the middlings are separated and classified. This chamber D isdivided by parallel vertical partitions into three or moresub-compartments, d d d, and the reduced end B of the bolt, whichtraverses the said compartments d d d, is covered with bolting-cloth ofdifferent mesh or degrees of fineness, increasing in coarseness from thefirst section, b. The object of thisis to separate the middlingsaccording to their several grades, and after the middlings have beenpurified by being subjected to a current of air in the aspirator, theyare conducted to the conveyors at the lower end of the same and disposedof, as usual.

Upon the inner end of the enlarged portion of the bolt B is a series ofblades or arms, L, which extend from the bolting-cloth nearly to thecenter of the reel, and project slightly into the end of the smallerportion, B. As the reel revolves, the outer ends of these blades liftthe material which collects at the lower portion of the bolt, andgradually raise it until the outer end is higher than the inner end,when the material slides down the incline into the smaller portion ofthe bolt. An inclined board, M, is placed within the compartment D,beneath the bolt B, with its lower edge nearest to the aspirator throughwhich the air is exhausted. This arrangement causes the material to passdown so near to that aspirator that the current of air can carry offparticles so heavy that they would fall to the bottom if they had topass any considerable distance before passing through the aspirator.

Having thus described myinvention, I claim and desire to secure byLetters Patent of the United States- 1. The combination, in amiddlings-puri fier, of an inelosing-ease, a partition therein, aninclined revolving bolt or sieve, in one compartment having abolting-extension at one end of a less diameter and projecting into theother compartment, a series of liftingblades in the end of the enlargedportion of said bolt, an inclined board in said second compartment,aspirators below said board, the lower edge of said board being nearestto the aspirator through which the air is ex- 7 hausted,andmcans,substantiall y as described,

for producing an ascending air-current.

2. The combination, in a middlings-pnrifier, of an inclosing-case, apartition therein, an inclined bolt or sieve, in one compartment havinga bolting-extension at one end of a smaller diameter, projecting intothe other compartment, lifting-blades in the larger portion of saidbolt, a wedge-shaped block between said partition and the end of saidlarger portion,and means,substantially as described, for producing anascending air-current.

In testimony that I claim the foregoing as my own I have hereuntoaffixed my signature in presence of two witnesses.

XVILLIAM M. SI-IOOK.

Witnesses:

LOUIS BAG GER, AUoUs'r PETERSON.

